In this 2-hour long project-based course, you will learn how to retrieve data from tables in a database using SQL SELECT statement with SQL Aggregate functions. The aggregate functions we will consider in this project are COUNT, SUM, MIN, MAX and AVG. Aggregate functions are used to summarize data from rows of a table into a single value. In addition, you will learn how to set conditions on the output of an aggregate function using the HAVING clause. Finally, you will learn how to tidy up the result set of aggregate functions using the ROUND function.

Performing Data Aggregation using SQL Aggregate Functions
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您将学到什么
Retrieve data as summaries from tables of a database using SQL aggregate functions
Understand how to set conditions on the result set of an aggregate functions using the HAVING clause
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在 2 小时内学习、练习并应用岗位必备技能
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关于此指导项目
分步进行学习
在与您的工作区一起在分屏中播放的视频中,您的授课教师将指导您完成每个步骤:
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Retrieve data from the employees database
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Retrieve data from the employees database using the COUNT function
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Select distinct data from fields of a table and use the GROUP BY statement
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Use the HAVING clause to set conditions on aggregate functions
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Retrieve data from the employees database using the SUM function
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Retrieve data from the employees database using the MIN & MAX functions
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Retrieve data from the employees database using the AVG function
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Use ROUND to tidy up the result set of aggregate functions
推荐体验
Familiarity with querying databases using SQL SELECT statement
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已于 Jun 23, 2022审阅
Instructor was very good and covered topics quickly and thoroughly
已于 Dec 29, 2020审阅
A complete and easy to understand course on SQL aggregate function.
已于 Jan 11, 2021审阅
Class was good. I couldn't find the answer to one of the quiz questions even after going back to the lesson referring to it.






